FA5538 데이터 시트보기 (PDF) - Fuji Electric
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FA5538 Datasheet PDF : 33 Pages
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FA5526/5527/5528/5536/5537/5538
4. Block diagram
CS (1)
5V reg
VCC
5V
ENB
UVLO
4.0V/3.5V
Latch
8.5V/7.9V
11µA/4µA
1.3mA OVP
28V
0.68V
off
START
UVLO
VH
(8)
VCC
(6)
30V
7.4k
FB
(2)
2.9V
OverLoad
1Meg
5pF
4.8V Buf
x1
OSC
VCO Q
T
3R R
Blanking
1 shot
TRG Q
CLR
15V/9V
ENB
SQ
OUT
PUT
OUT
(5)
0.28V SLOPE
60k
GENERATOR
-
20k
+Σ
IS comp.
0.52V
RQ
F.F.
GND
(4)
IS (3)
FA5526 / FA5527 / FA5528 for Timer Latched OCP
CS (1)
5V reg
VCC
5V
ENB
UVLO
Auto-Recovery
8.5V/7.9V
4.0V/3.5V
11µA/4µA
1.3mA OVP
28V
0.68V
off
START
UVLO
VH
(8)
VCC
(6)
30V
7.4k
FB
(2)
2.9V
OverLoad
1Meg
5pF
4.8V Buf
x1
OSC
VCO Q
T
3R R
Blanking
1 shot
TRG Q
CLR
15V/9V
ENB
SQ
OUT
PUT
OUT
(5)
0.28V SLOPE
60k
GENERATOR
-
20k
+Σ
IS comp.
0.52V
RQ
F.F.
GND
(4)
IS (3)
FA5536 / FA5537 / FA5538 for Auto-Recovery OCP
5. Pin assignments
Pin
Symbol Function
Description
1
CS
Soft start/latch-mode stop Time Setting of Soft start and Over Current Protection
2
FB
Feedback input
Input for controlling current comparator threshold voltage
3
IS
Current sensor input
Input for monitoring MOSFET current
4
GND Ground
Power supply ground
5
OUT
Output
Output for directly driving a MOSFET
6
VCC
Power supply
Power supply for ICs
7
(NC)
No connection
No connection
8
VH
High voltage input
Input terminal for start-up circuit
Fuji Electric Co., Ltd.
AN-087E Rev.1.0
April-2011
5
http://www.fujielectric.co.jp/products/semiconductor/
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